With a trip selected, press the edit button (pencil).

Select Reorder.

See Figure 1. Select a destination to reorder.

Select the reorder button on the right side of the screen. The item being moved is highlighted.

Select the place to move the highlighted item. The item will be moved before the selected place (if higher on the list) or after the selected place (if lower on the list).

Change the order of other destinations as needed. When finished, select Back.